我正在尝试安装 opencv 4.1 以在 python 中使用，支持 Cuda。我尝试按照本指南进行操作并预装了 CUDA 10(因为我需要它与 keras 并且这已经有效了(，但是在使用以下代码在 python 中检查 opencv 时
import cv2 as cv
print(cv.__version__)
print(cv.getBuildInformation())
但它返回错误的打开 cv 版本和不可用的 cuda 库：
3.2.0
General configuration for OpenCV 3.2.0 =====================================
Version control: unknown
Extra modules:
Location (extra): /build/opencv-L2vuMj/opencv-3.2.0+dfsg/contrib/modules
Version control (extra): unknown
Platform:
Timestamp: 2018-09-20T09:28:13Z
Host: Linux 4.4.0-135-generic x86_64
CMake: 3.10.2
CMake generator: Unix Makefiles
CMake build tool: /usr/bin/make
Configuration: Release
C/C++:
Built as dynamic libs?: YES
C++ Compiler: /usr/bin/c++ (ver 7.3.0)
C++ flags (Release): -g -O2 -fdebug-prefix-map=/build/opencv-L2vuMj/opencv-3.2.0+dfsg=. -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wno-narrowing -Wno-delete-non-virtual-dtor -Wno-comment -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -mno-avx -mno-sse3 -mno-ssse3 -mno-sse4.1 -mno-sse4.2 -ffunction-sections -fvisibility=hidden -fvisibility-inlines-hidden -g -O2 -fdebug-prefix-map=/build/opencv-L2vuMj/opencv-3.2.0+dfsg=. -fstack-protector-strong -Wformat -Werror=format-security -DNDEBUG
C++ flags (Debug): -g -O2 -fdebug-prefix-map=/build/opencv-L2vuMj/opencv-3.2.0+dfsg=. -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wno-narrowing -Wno-delete-non-virtual-dtor -Wno-comment -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -mno-avx -mno-sse3 -mno-ssse3 -mno-sse4.1 -mno-sse4.2 -ffunction-sections -fvisibility=hidden -fvisibility-inlines-hidden -g -O0 -DDEBUG -D_DEBUG
C Compiler: /usr/bin/cc
C flags (Release): -g -O2 -fdebug-prefix-map=/build/opencv-L2vuMj/opencv-3.2.0+dfsg=. -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wno-narrowing -Wno-comment -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -mno-avx -mno-sse3 -mno-ssse3 -mno-sse4.1 -mno-sse4.2 -ffunction-sections -fvisibility=hidden -g -O2 -fdebug-prefix-map=/build/opencv-L2vuMj/opencv-3.2.0+dfsg=. -fstack-protector-strong -Wformat -Werror=format-security -DNDEBUG
C flags (Debug): -g -O2 -fdebug-prefix-map=/build/opencv-L2vuMj/opencv-3.2.0+dfsg=. -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wno-narrowing -Wno-comment -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -mno-avx -mno-sse3 -mno-ssse3 -mno-sse4.1 -mno-sse4.2 -ffunction-sections -fvisibility=hidden -g -O0 -DDEBUG -D_DEBUG
Linker flags (Release): -Wl,-Bsymbolic-functions -Wl,-z,relro -Wl,-z,now -Wl,-Bsymbolic-functions -Wl,-z,relro -Wl,-z,now
Linker flags (Debug): -Wl,-Bsymbolic-functions -Wl,-z,relro -Wl,-z,now
ccache: NO
Precompiled headers: NO
Extra dependencies: /usr/lib/x86_64-linux-gnu/libwebp.so gdcmMSFF /usr/lib/x86_64-linux-gnu/libImath.so /usr/lib/x86_64-linux-gnu/libIlmImf.so /usr/lib/x86_64-linux-gnu/libIex.so /usr/lib/x86_64-linux-gnu/libHalf.so /usr/lib/x86_64-linux-gnu/libIlmThread.so /usr/lib/libgdal.so gtk-3 gdk-3 pangocairo-1.0 pango-1.0 atk-1.0 cairo-gobject cairo gdk_pixbuf-2.0 gio-2.0 gobject-2.0 glib-2.0 gthread-2.0 dc1394 avcodec avformat avutil swscale avresample gphoto2 gphoto2_port /usr/lib/x86_64-linux-gnu/hdf5/serial/libhdf5.so /usr/lib/x86_64-linux-gnu/libpthread.so /usr/lib/x86_64-linux-gnu/libsz.so /usr/lib/x86_64-linux-gnu/libdl.so /usr/lib/x86_64-linux-gnu/libm.so vtkRenderingOpenGL vtkImagingHybrid vtkIOImage vtkCommonDataModel vtkCommonMath vtkCommonCore vtksys vtkCommonMisc vtkCommonSystem vtkCommonTransforms vtkCommonExecutionModel vtkDICOMParser vtkIOCore /usr/lib/x86_64-linux-gnu/libz.so vtkmetaio /usr/lib/x86_64-linux-gnu/libjpeg.so /usr/lib/x86_64-linux-gnu/libpng.so /usr/lib/x86_64-linux-gnu/libtiff.so vtkImagingCore vtkRenderingCore vtkCommonColor vtkFiltersExtraction vtkFiltersCore vtkFiltersGeneral vtkCommonComputationalGeometry vtkFiltersStatistics vtkImagingFourier vtkalglib vtkFiltersGeometry vtkFiltersSources vtkInteractionStyle vtkRenderingLOD vtkFiltersModeling vtkIOPLY vtkIOGeometry vtkFiltersTexture vtkRenderingFreeType /usr/lib/x86_64-linux-gnu/libfreetype.so vtkftgl vtkIOExport vtkRenderingAnnotation vtkImagingColor vtkRenderingContext2D vtkRenderingGL2PS vtkRenderingContextOpenGL /usr/lib/x86_64-linux-gnu/libgl2ps.so vtkRenderingLabel tesseract lept dl m pthread rt tbb
3rdparty dependencies:
OpenCV modules:
To be built: core flann hdf imgproc ml photo reg surface_matching video viz freetype fuzzy imgcodecs shape videoio highgui objdetect plot superres ts xobjdetect xphoto bgsegm bioinspired dpm face features2d line_descriptor saliency text calib3d ccalib datasets rgbd stereo stitching videostab ximgproc aruco optflow phase_unwrapping structured_light java python2 python3
Disabled: world contrib_world
Disabled by dependency: tracking
Unavailable: cudaarithm cudabgsegm cudacodec cudafeatures2d cudafilters cudaimgproc cudalegacy cudaobjdetect cudaoptflow cudastereo cudawarping cudev cnn_3dobj cvv dnn matlab sfm
GUI:
QT: NO
GTK+ 3.x: YES (ver 3.22.30)
GThread : YES (ver 2.56.2)
GtkGlExt: NO
OpenGL support: NO
VTK support: YES (ver 6.3.0)
Media I/O:
ZLib: /usr/lib/x86_64-linux-gnu/libz.so (ver 1.2.11)
JPEG: /usr/lib/x86_64-linux-gnu/libjpeg.so (ver )
WEBP: /usr/lib/x86_64-linux-gnu/libwebp.so (ver encoder: 0x020e)
PNG: /usr/lib/x86_64-linux-gnu/libpng.so (ver 1.6.34)
TIFF: /usr/lib/x86_64-linux-gnu/libtiff.so (ver 42 - 4.0.9)
JPEG 2000: NO
OpenEXR: /usr/lib/x86_64-linux-gnu/libImath.so /usr/lib/x86_64-linux-gnu/libIlmImf.so /usr/lib/x86_64-linux-gnu/libIex.so /usr/lib/x86_64-linux-gnu/libHalf.so /usr/lib/x86_64-linux-gnu/libIlmThread.so (ver 2.2.0)
GDAL: /usr/lib/libgdal.so
GDCM: YES (ver 2.8.4)
Video I/O:
DC1394 1.x: NO
DC1394 2.x: YES (ver 2.2.5)
FFMPEG: YES
avcodec: YES (ver 57.107.100)
avformat: YES (ver 57.83.100)
avutil: YES (ver 55.78.100)
swscale: YES (ver 4.8.100)
avresample: YES (ver 3.7.0)
GStreamer: NO
OpenNI: NO
OpenNI PrimeSensor Modules: NO
OpenNI2: NO
PvAPI: NO
GigEVisionSDK: NO
Aravis SDK: NO
UniCap: NO
UniCap ucil: NO
V4L/V4L2: NO/YES
XIMEA: NO
Xine: NO
gPhoto2: YES
Parallel framework: TBB (ver 2017.0 interface 9107)
Other third-party libraries:
Use IPP: NO
Use IPP Async: NO
Use VA: NO
Use Intel VA-API/OpenCL: NO
Use Lapack: NO
Use Eigen: YES (ver 3.3.4)
Use Cuda: NO
Use OpenCL: YES
Use OpenVX: NO
Use custom HAL: NO
OpenCL: <Dynamic loading of OpenCL library>
Include path: /usr/include/CL
Use AMDFFT: NO
Use AMDBLAS: NO
Python 2:
Interpreter: /usr/bin/python2.7 (ver 2.7.15)
Libraries: /usr/lib/x86_64-linux-gnu/libpython2.7.so (ver 2.7.15rc1)
numpy: /usr/lib/python2.7/dist-packages/numpy/core/include (ver 1.13.3)
packages path: lib/python2.7/dist-packages
Python 3:
Interpreter: /usr/bin/python3 (ver 3.6.5)
Libraries: /usr/lib/x86_64-linux-gnu/libpython3.6m.so (ver 3.6.5)
numpy: /usr/lib/python3/dist-packages/numpy/core/include (ver 1.13.3)
packages path: lib/python3.6/dist-packages
Python (for build): /usr/bin/python2.7
Java:
ant: /usr/bin/ant (ver 1.10.3)
JNI: /usr/lib/jvm/default-java/include /usr/lib/jvm/default-java/include/linux /usr/lib/jvm/default-java/include
Java wrappers: YES
Java tests: NO
Matlab: Matlab not found or implicitly disabled
Documentation:
Doxygen: /usr/bin/doxygen (ver 1.8.13)
Tests and samples:
Tests: NO
Performance tests: YES
C/C++ Examples: YES
Install path: /usr
cvconfig.h is in: /build/opencv-L2vuMj/opencv-3.2.0+dfsg/obj-x86_64-linux-gnu
-----------------------------------------------------------------
在生成 cmake 时，在 cmake-gui 中，cuda WAS 已启用，opencv 实际上是 4.1 版。
有什么想法吗？提前感谢！
附言。我没有使用 pip 来安装 opencv，但我是从源代码构建的
问题是在我用我想要的标志编译 opencv 之后，我忘记运行sudo make install来有效地安装所有绑定等。
默认情况下，python 会找到 cv2 模块，但并非所有模块都已配置。